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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 546 · 40 questions
TalentJR

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we measure it (c) we change it
  2. 2.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) vinegar (d) lemon juice
  3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
  4. 4.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
  5. 5.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) lemon juice (c) white paper strips (d) water
  6. 6.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
  7. 7.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
  8. 8.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
  9. 9.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) salt water (d) soap solution
  11. 11.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
  12. 12.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
  13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the number of drops (d) the liquid we test
  14. 14.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  15. 15.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
  16. 16.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  17. 17.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) baking soda water (d) lemon juice
  18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
  19. 19.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  20. 20.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
  21. 21.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
  22. 22.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
  23. 23.🔍 Which is the odd one out? (a) plain water (b) sugar water (c) detergent water (d) salt water
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
  25. 25.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
  26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
  27. 27.🫧 Which of these is neutral? (a) lemon juice (b) curd (c) orange juice (d) plain water
  28. 28.True or false: salt water keeps turmeric yellow. (a) True (b) False
  29. 29.True or false: sugar water keeps turmeric yellow. (a) False (b) True
  30. 30.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  31. 31.True or false: a mirror is needed for the turmeric test. (a) False (b) True
  32. 32.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  33. 33.True or false: a magnet is needed for the turmeric test. (a) True (b) False
  34. 34.True or false: a comb is needed for the turmeric test. (a) True (b) False
  35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
  36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
  37. 37.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
  38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
  39. 39.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) yeast (d) water
  40. 40.True or false: plain water is neutral. (a) False (b) True

Answer key

  1. we measure it
  2. detergent water
  3. False
  4. not needed
  5. a magnet
  6. an acid
  7. it stays yellow
  8. an old shirt or apron
  9. False
  10. soap solution
  11. reddish-brown
  12. use only kitchen items
  13. the liquid we test
  14. an acid
  15. tamarind water
  16. not needed
  17. baking soda water
  18. True
  19. not needed
  20. salt water
  21. False
  22. lemon juice
  23. detergent water
  24. False
  25. False
  26. we keep it the same
  27. plain water
  28. True
  29. True
  30. a base
  31. False
  32. an acid
  33. False
  34. False
  35. an indicator
  36. we change it
  37. sugar water
  38. we keep it the same
  39. yeast
  40. True

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